This is the 570th most frequent Arabic word.
تحسين
Improvement.
In this sentence, تحسين is used to signify the act of improving or enhancing efficiency through professional effort.
يعمل المهندس على تحسين كفاءة الآلة.
The engineer is working on improving the efficiency of the machine.
In this case, تحسين denotes technical improvement or refining to enhance quality using advancements.
تم تحسين جودة الصورة باستخدام تقنية جديدة.
The image quality was improved using new technology.
Here, تحسين represents fostering better relationships or resolving issues politically or diplomatically.